Tools for investigating Log4j CVE-2021-44228

Related tags

Security related resources Log4jTools
Overview

Log4jTools

Tools for investigating Log4j CVE-2021-44228

FetchPayload.py (Get java payload from ldap path provided in JNDI lookup).

Example command:

Requirements: curl (system), requests (python)

python FetchPayload.py ldap://maliciouserver:1337/path

[+] getting object from ldap://maliciouserver:1337/path
[+] exploit payload: http://maliciouserver:80/Exploit.class
[+] seeing if attacker left behind un-compile payload http://maliciouserver:80/Exploit.java
[x] failed to find payload Exploit.java
[+] trying to fetch compiled payload http://maliciouserver:80/Exploit.class
[+] found payload and saved to file Exploit.class_
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Comments
  • A few updates to status messages and the file name

    A few updates to status messages and the file name

    Changed some wording around in print statements and added SHA 256 sums to the file names so multiple LDAP servers can be polled and the file names won't collide.

    opened by lcashdol 1
  • Several encoding errors

    Several encoding errors

    Hey MalwareTech, upon using you Honeypot on a public facing VPS, I am getting the following erros:

    ~/Log4jTools# python3 SimpleHoneypot.py
error: uncaptured python exception, closing channel <__main__.Log4jHandler 178.239.21.144:59913 at 0x7f7603e76940> (<class 'UnicodeDecodeError'>:'utf-8' codec can't decode byte 0xbf in position 12: invalid start byte [/usr/lib/python3.7/asyncore.py|read|83] [/usr/lib/python3.7/asyncore.py|handle_read_event|422] [SimpleHoneypot.py|handle_read|45])
error: uncaptured python exception, closing channel <__main__.Log4jHandler 178.239.21.144:60037 at 0x7f7603e76dd8> (<class 'UnicodeDecodeError'>:'utf-8' codec can't decode byte 0xbf in position 12: invalid start byte [/usr/lib/python3.7/asyncore.py|read|83] [/usr/lib/python3.7/asyncore.py|handle_read_event|422] [SimpleHoneypot.py|handle_read|45])
error: uncaptured python exception, closing channel <__main__.Log4jHandler 192.241.207.116:46952 at 0x7f7603e76dd8> (<class 'UnicodeDecodeError'>:'utf-8' codec can't decode byte 0xfe in position 11: invalid start byte [/usr/lib/python3.7/asyncore.py|read|83] [/usr/lib/python3.7/asyncore.py|handle_read_event|422] [SimpleHoneypot.py|handle_read|45])
error: uncaptured python exception, closing channel <__main__.Log4jHandler 68.183.125.37:47268 at 0x7f7603e76dd8> (<class 'UnicodeDecodeError'>:'utf-8' codec can't decode byte 0xd9 in position 11: invalid continuation byte [/usr/lib/python3.7/asyncore.py|read|83] [/usr/lib/python3.7/asyncore.py|handle_read_event|422] [SimpleHoneypot.py|handle_read|45])

    They seem to be caused by different people requesting stuff that cant be decoded ? Any idea how to fix ?

    opened by WebBotMaster 1
Owner
MalwareTech
MalwareTech
GitHub
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